Improvement in locks



J77 BRADY.

Latch.

Patented Oct 11, 1870 N PETERS, PNOTCMLITHOGRAPHER. WASHINGTONv D, C.

f diluted stem fitted ctjjitr,

, To all whom it may concern.-

Be it known that L'JnMns BRADY, of Branford,

JAMES nuAnrfor' 'BRANFORD, CONNECTICUT, assielvon FOR-D LocK WORKS, or SAME PLACE.

TO'fTHE BRAN- Letters Patent No. 108,098, dated October 11,1870.

IMPROVEMENT IN LOCKS.

The Schedule referred to in these Letters Patent and making part of the same in-thc county of New Haven and State of Gounectiout, have invented a new and useful Improvement in Locks, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawing forming part of this specification, and in which- Figure 1 represents a sectional face view of a nigh tlatch or look, in illustration of my improvement, said section being taken as indicated by the line in fig. 2, with the plate of .the lock-case removed;

Figure 2 is a longitudinal section. of the same, taken as indicated by the line 1] yin fig. 1'; and

Figure 3 is,a transverse section'of the same, taken as denoted by the line z z in fig. 1.

Figures 4 and 5 are face and .edgeviews of a perforated key that may be used in connection with the lock. v e

Similar letters of reference indicate corresponding parts. l e

My invention, although here shown as applied 'to a night-latch, is applicable, ;to yarious kinds of door and other locks, and'consists in a follower so constructed or connected witlr the tumbler or key-operating portion of theloclothat said tnmbler-carrler and keyeoperating portion, revolving within the escutche'on, has secured to itali adj ustable character or action with relation to theiollower.

Although the invcution is here shown as applied in connection with ,,a perforated key, which I have made the subject of a separate application for Letters Patent, thisinvention is' not restricted to any' particular form of key or of tumblers to secure the operation of the follower by the key,

Referring to the accompanying drawing A represents a lock or latch-case, designed to be arranged on the inside of a door, and having a latch or bolt, B, under control of a spring, 0, and follower, D. r

This follower 1), which turns to operate the bolt, is of a sectional construction, being made up, in part, of a sliding or adjustable body, D, that turns in common with the bolt-operating portion D, but is made capable of extension or contraction relatively to the latter or lock-case lll'WlllCll the latter works.

This latter portion D is of cylindrical or.otl1ersuit-- able shape,-so as to admit of its turning within a hollow cylinder, E, fast to the plate of the. lock; or other wise made stationary, and designed to project, more .or less, through'the door, according to the thickness of the latter but, when not projecting wholly through the door, the aperture in which it fits should be extended through the balance of the door.

, the adj ustable port-ion D of the follower, so that the expansion or contraction of the follower is immaterial regards the fitting of the key, which may be of,

uniform length for all the changes of whichthe lock is capable, to adapt it to different thicknesses of doors. t

Said tumblers or works may be ofvaried construction, and the key be differently shaped, to correspond, but the key G, as here shown, is made with an irreg ular-shaped perforation or perforations, s, in it, so that, when properly inserted through the keyhole d,

(which is extended into the body D of the' followe and through between'lips f of lever-like tumblers H, pivoted as at g, said tumblers, which are acted upon by springs, 11, at their backs, are, by the entry of their lips within the perforation s of the key made to line themselves so that the follower may be turned by the key,the lining of said tumblers consisting in such a position of them as will put double or transverse locking-wings i, with which they are provided, out of con nection with slots, lilr, in either side of the fast cylinder E.

cutcheon F, made adjustable relatively to the port-ion D, for operation substantially as and for the purpose herein set forth. e

' JAMES BRADY.

\Vitnesses J. E. RUSSELL, JOHX J. Banruomnn. 

